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[vsnet-campaign-dn 2316] DV UMa: superhumps and eclipses

DV UMa: superhumps and eclipses

    In the light curve taken in the last night, we can see 
clear superhumps and eclipses, which show the superoutburst is 
still ongoing.  Superhumps have decreased in amplitude, but it 
is still large (0.4-0.5mag).  Eclipses became deeper (depth~1.5mag).   
On April 17, the profile of eclipses is asymmetric: rapid ingress 
and relatively slow egress, probably indicating a tidally distorted 
accretion disk.  

    The object will soon enter a late phase of superoutburst, and 
time-series observations of eclipses will be useful to study the 
evolution of late superhumps.

Regards,
Makoto Uemura

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